I can't answer your first question all that well other then to say if you're 
not wanting to use a lot of output power for emergency communications, you 
can get a Jell Cell battery for a decent price, and they're fairly compact. 
As far as your second question, do you have an in door antenna that is close 
to your speakers?  That's probably what your problem is.  You're puting rf 
into your speakers.  That's causing the hum.
73,
Chris, w8cjs
----- Original Message ----- 
From: "Terri Pannett" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, August 28, 2007 12:59 PM
Subject: two questions


> Hi, List
>
> I have two questions.
>
> 1.  I would like to get some emergency power for my station, at least for
> vhf.  I live in an apartment and I don't have a place for a car or marine
> type battery.  I have a Kenwood TMG707A and an Icom O2AT.  What would you
> suggest?
>
> 2.  The speakers for my PC make a terrible sound when I transmit.  The 
> only
> way I can get around this is to turn them off.  Can anyone suggest a 
> better
> work-around than that?
>
> Thanks.
>
> Terri Amateur Radio call sign KF6CA.